久久亚洲国产成人影院-久久亚洲国产的中文-久久亚洲国产高清-久久亚洲国产精品-亚洲图片偷拍自拍-亚洲图色视频

   

Study: Obesity is 'socially contagious'

(AP)
Updated: 2007-07-26 10:10


Manuel Uribe, tipping the scales at 560 kilograms (1,234 pounds) and seen here at his home in 2006, will be listed as the world's fattest man by the Guinness Book of Records, while a loss of 200 kilos (440 pounds) may make him the man who lost the most weight. [AFP]
If your friends and family get fat, chances are you will too, researchers report in a startling new study that suggests obesity is "socially contagious" and can spread easily from person to person.

The large, federally funded study found that to be true even if your loved ones lived far away. Social ties seemed to play a surprisingly strong role, even more than genes are known to do.

"We were stunned to find that friends who are hundreds of miles away have just as much impact on a person's weight status as friends who are right next door," said co-author James Fowler of the University of California, San Diego.

The study found a person's chances of becoming obese went up 57 percent if a friend did, 40 percent if a sibling did and 37 percent if a spouse did. In the closest friendships, the risk almost tripled.

Researchers think it's more than just people with similar eating and exercise habits hanging out together. Instead, it may be that having relatives and friends who become obese changes one's idea of what is an acceptable weight.

Despite their findings, the researchers said people should not sever their relationships.

"There is a ton of research that suggest that having more friends makes you healthier," Fowler said. "So the last thing that you want to do is get rid of any of your friends."

The study was published in Thursday's New England Journal of Medicine and funded by the National Institute on Aging.

Researchers analyzed medical records of people in the Framingham Heart Study, which has been following the health of residents of that Boston suburb for more than a half century. They tracked records for relatives and friends using contact information that participants provided each time they were examined over a 32-year period.

In all, 12,067 people -- all Framingham participants -- were involved in the study.

After taking into account natural weight gain and other factors, researchers found the greatest influence occurred among friends and not in people sharing the same genes or living in the same household. Geography and smoking cessation had no effect on obesity risk.

On average, the researchers calculated, when an obese person gained 17 pounds, the corresponding friend put on an extra 5 pounds.

Gender also had a strong influence. In same-sex friendships, a person's obesity risk increased by 71 percent if a friend gained weight. Between brothers, the risk was up by 44 percent and 67 percent between sisters.

Indiana University statistician Stan Wasserman said while the study was clever, it had its limitations because it excluded relationships outside of the Framingham group.

Obesity is a global public health problem. About 1.5 billion adults worldwide are overweight, including more than 400 million who are obese. Two-thirds of Americans are either overweight or obese.

Much of the recent research focus has been on the intense hunt for obesity genes involved in appetite or calorie burning. Treatment has been mainly centered on helping individuals curb their weight through better diet and fitness.

The findings could open a new avenue for treating this worldwide epidemic. The researchers said it might be helpful to treat obese people in groups instead of just the individual.

"Because people are interconnected, their health is interconnected," said lead author Dr. Nicholas Christakis, a Harvard sociologist.

Obesity experts not involved in the research said the results back up what they have suspected all along — that people look toward one another for what is an acceptable weight.

"If you're just a little bit heavy and everyone around you is quite heavier, you will feel good when you look in a mirror," said Dr. David Katz, director of Yale University's Prevention Research Center.



Top World News  
Today's Top News  
Most Commented/Read Stories in 48 Hours
主站蜘蛛池模板: 国产成人系列 | 久久精品国产一区二区三区不卡 | 99久久国产综合精品2020 | 日韩在线一区二区三区 | 亚洲日本高清影院毛片 | 欧美高h视频 | 国产精品久久久精品三级 | 亚洲精品一区二区在线观看 | 国产高清三级 | 欧美日韩加勒比一区二区三区 | 在线一级片| 日本人在线看片 | 欧美日韩另类在线观看视频 | 亚洲天堂网在线播放 | 亚洲国产成人精品一区91 | 国产日韩精品欧美一区喷 | 久久www免费人成_看片高清 | 人摸人操| 成人在线观看一区 | 欧美成人交tv免费观看 | 国产精品免费看久久久香蕉 | 福利视频在线午夜老司机 | 久久免费看视频 | 国产成人精品亚洲日本在线观看 | 91视频久久 | 啪啪一级片 | 一区二区三区四区在线播放 | 性刺激欧美三级在线现看中文 | 图片区偷拍区小说区 | 在线视频一区二区日韩国产 | 成人性生片全套 | 国产成人yy精品1024在线 | 新26uuu在线亚洲欧美 | 免费国产视频在线观看 | 国产精品porn | 可以免费看黄色的网站 | 国产精品免费看久久久 | 毛片免费观看日本中文 | 美女把张开腿男生猛戳免费视频 | 欧美毛片一级的免费的 | 尤物蜜芽福利国产污在线观看 |